Fundamentals of Mechanical Engineering ❤️
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This channel will help you feel the concepts in Mechanical Engineering and will be useful for various competetive exams.
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Fundamentals of Mechanical Engineering ❤️
LMTD has
The answer to this poll is



3- LMTD is Logarithmic Mean Temperature difference. So it is difference in temperature so its value will be same in degree celcius and Kelvin.
Can "Make Span Time" be interpretated as "Job Flow Time" of last job.
Anonymous Poll
55%
1 True
45%
2 False
Below curie temperature magnetic properties starts disappearing then there is
Anonymous Poll
39%
1 Change in Phase
61%
2 No change in Phase
Fundamentals of Mechanical Engineering ❤️
Can "Make Span Time" be interpretated as "Job Flow Time" of last job.
The answer to this poll is


1 True-Job flow time of last job will only take place if all the previous jobs are machined so which will be equal to Make span time.
Fundamentals of Mechanical Engineering ❤️
Below curie temperature magnetic properties starts disappearing then there is
The answee to this poll is



2 No change in Phase-Below curie temperature there is change in phase diagram because there is change in magnetic properties but actually there is no change in phase of Iron.
Which has more slip systems?
Anonymous Poll
60%
1 BCC
40%
2 FCC
Which is more ductile?
Anonymous Poll
44%
1 BCC
56%
2 FCC
Ignore the tickmarks in the options
Correct answer will be posted tomorrow.
Fundamentals of Mechanical Engineering ❤️
Which has more slip systems?
The answer to this poll is



1 BCC-BCC has 48 slip systems
while FCC has 12 slip systems.
Fundamentals of Mechanical Engineering ❤️
Which is more ductile?
The answer to this poll is



2 FCC-Though slip systems are more in BCC it should be more ductile because to be ductile there should be more than 5 independent slip systems. But more number of slip systems in BCC causes self interferrence hence it behaves like Brittle.
If the inclination angle decreases then Sensitivity of U tube manometer will
Anonymous Poll
34%
1 Decrease
66%
2 Increase
Fundamentals of Mechanical Engineering ❤️
If the inclination angle decreases then Sensitivity of U tube manometer will
The answer to this poll is


Increases- the angle is from horizontal and is inversely proportional to Sine of angle.
For an irreversible process to be isentropic it is a must condition that the process should be
Anonymous Poll
10%
1 Heat addition
47%
2 Heat Rejection
43%
3 No heat transfer
Fundamentals of Mechanical Engineering ❤️
For an irreversible process to be isentropic it is a must condition that the process should be
The answer to this poll is




2 Heat Rejection- Because heat generation is always positive generally caused by friction so, to be isentropic, the process must be heat rejection process such that Q/T equals to heat generation.
By increasing friction "Centre Burst" , a defect in extrusion process
Anonymous Poll
57%
1 Increases
31%
2 Decreases
11%
3 No change
Turning of cast iron is preferred by
Anonymous Poll
32%
1 Positive Rake
32%
2 Zero Rake
36%
3 Negative Rake